Intelligent forklift with automatic feeding and discharging functions

Abstract

The invention belongs to the field of forklifts, and particularly relates to an automatic feeding and discharging intelligent forklift which comprises a forklift body, a portal, a mounting frame, a pallet fork, an adjusting assembly and the like. By the adoption of the automatic feeding and discharging intelligent forklift, a first electric push rod is controlled to contract, two clamping plates loosen the lowermost annular workpiece, and the stacked annular workpieces slowly slide downwards in the clamping frame; therefore, the lowermost annular workpiece slowly slides out of the clamping frame and is placed on a tray corresponding to a station or the ground, the purpose of discharging the workpieces one by one is achieved, manual secondary carrying through a travelling crane is not needed, meanwhile, the effect of gently taking and placing is achieved, and the situation that the workpieces collide with the ground and are damaged is avoided. The problem that an existing forklift cannot discharge the annular workpieces one by one no matter the annular workpieces are directly forked or transferred through tray forking is solved.

Description

Technical Field

[0001] The present invention belongs to the field of forklifts, and particularly relates to an intelligent forklift for automatic loading and unloading. Background Art

[0002] In the prior art, forklifts usually transport and transfer goods by using forks to pick up goods or pallets. For metal ring workpieces such as bearing outer rings and inner rings, the ring workpieces need to be erected or placed on a pallet so that the forks can pick them up. Whether directly picking up the ring workpieces or picking them up through a pallet for transfer, the existing forklifts cannot discharge the ring workpieces one by one. When a batch of ring workpieces need to be transferred to multiple different workstations, after the forklift discharges the materials, it is necessary for workers to use a traveling crane to further hoist and transfer the ring workpieces. At the same time, in order to facilitate the forks of the forklift to pick up the ring workpieces stacked on the pallet, when stacking the ring workpieces, it is necessary for workers to place pads on the ring workpieces to separate two adjacent ring workpieces. However, the forklift itself is relatively bulky. When operating the forklift to insert the forks into the gap between two adjacent ring workpieces, the forks are likely to touch and push the ring workpieces, causing the ring workpieces to fall and be damaged by collision, affecting the quality of the ring workpieces. Summary of the Invention

[0003] In order to overcome the drawback that the existing forklifts cannot discharge the ring workpieces one by one whether directly picking up the ring workpieces or picking them up through a pallet for transfer, the present invention provides an intelligent forklift for automatic loading and unloading.

[0004] The technical implementation solution of the present invention is: an intelligent forklift for automatic loading and unloading, including a forklift body, a mast, a mounting frame, forks, and an adjusting component; the forklift body is connected with the mast; the mast is connected with the mounting frame; the mounting frame is connected with the adjusting component; the adjusting component is connected with two forks, and the interval between the two forks is adjusted through the adjusting component; it further includes a fixing frame, a cylinder, a fixing plate, a clamping component, and an inner supporting component; the fixing frame is fixedly connected to the mast; the fixing frame is fixedly connected with the cylinder; the telescopic end of the cylinder is fixedly connected with the fixing plate; four annular and equally spaced clamping components are connected to the fixing plate, and the clamping components are used for clamping the ring workpieces; an inner supporting component is connected to the lower side of the fixing plate, and the inner supporting component is used for limiting the ring workpieces; the inner supporting component is connected to all the clamping components.

[0005] Optionally, it further includes a first fixing plate, a first electric push rod, and a clamping plate; chutes are respectively opened at the front and rear of the mounting frame, and an electric slider is slidably connected in each chute, and a first fixing plate is fixedly connected to each electric slider; a plurality of first electric push rods are fixedly connected to the opposite sides of the two first fixing plates; the telescopic ends of all the first electric push rods in the front jointly fixedly connect a clamping plate, and the clamping plate is made of rubber material; the telescopic ends of all the first electric push rods in the rear jointly fixedly connect another clamping plate.

[0006] Optionally, the clamping assembly includes a connecting rod, a clamping frame, a rack, a second fixing plate, a trapezoidal block, an extrusion unit and a first elastic member; the connecting rod is fixedly connected to the fixed disk; the connecting rod is fixedly connected to the clamping frame; a rectangular groove is formed in the clamping frame, and a plurality of first elastic members are fixedly connected to the top of the rectangular groove. The telescopic ends of all the first elastic members are jointly fixedly connected to the second fixing plate, and the lower side of the second fixing plate contacts the clamping frame; the second fixing plate is fixedly connected to the rack through a connecting block; a plurality of equidistant extrusion units are connected in the rectangular groove of the clamping frame, and a plurality of equidistant trapezoidal blocks are fixedly connected to the second fixing plate, and each trapezoidal block corresponds to an extrusion unit.

[0007] Optionally, the extrusion unit includes a U-shaped frame, a clamping roller, a spur gear and a second elastic member; a plurality of second elastic members are fixedly connected in the rectangular groove of the clamping frame; the telescopic ends of all the second elastic members are jointly fixedly connected to the U-shaped frame; a clamping roller is rotatably connected to the U-shaped frame; the clamping roller is fixedly connected to the spur gear; the spur gear faces the rack.

[0008] Optionally, the inner support assembly includes an annular frame, an air pump, a branch pipe and an arc-shaped airbag; the annular frame is fixedly connected to the lower side of the fixed disk; the annular frame is connected to the air pump; the air outlet of the air pump is communicated with the branch pipe; an arc-shaped airbag is arranged between every two adjacent clamping frames, and each arc-shaped airbag is fixedly connected to the corresponding two clamping frames; all the arc-shaped airbags are communicated with the branch pipe.

[0009] Optionally, a scraping strip is arranged on the lower side of each arc-shaped airbag.

[0010] Optionally, it further includes a rectangular airbag, a three-way pipe and an arc-shaped block; a rectangular airbag is arranged in the rectangular groove of each clamping frame, and a plurality of equidistant protruding parts are arranged on the rectangular airbag; a three-way pipe is fixedly connected in each clamping frame; each three-way pipe is communicated with a rectangular airbag; each three-way pipe is communicated with the corresponding two arc-shaped airbags; a plurality of equidistant arc-shaped blocks are fixedly connected to each second fixing plate, and each arc-shaped block corresponds to a protruding part of a rectangular airbag.

[0011] Optionally, it further includes a second driving motor and a baffle; a second driving motor is fixedly connected to the lower side of each clamping frame; a through groove is formed in the lower part of each clamping frame; a baffle is fixedly connected to the output shaft of each second driving motor, and the baffle is located in the through groove at the lower part of the clamping frame.

[0012] Optionally, it further includes a first fixing rod and a spherical touch sensor; a first fixing rod is fixedly connected to the lower side of each clamping frame; a spherical touch sensor is fixedly connected to each first fixing rod; the height of the lower side of the spherical touch sensor is lower than the height of the lower side of the forklift forks.

[0013] Optionally, it further includes a second electric push rod, a third driving motor, a third fixing plate, a second fixing rod, an arc plate, a rubber belt, and an extrusion block; a second electric push rod is fixedly connected to each of the left and right parts of the fixed disk; a third fixing plate is fixedly connected to the telescopic end of each of the two second electric push rods; a third driving motor is fixedly connected to each of the third fixing plates; a second fixing rod is fixedly connected to the output shaft of each of the third driving motors; an arc plate is slidably connected to the inside of the two clamping brackets on the left; another arc plate is slidably connected to the inside of the two clamping brackets on the right; each of the two arc plates is rotatably connected to a second fixing rod, and the connecting rod is an elastic telescopic rod; a rubber belt is wound around the inside of the two clamping plates, the rubber belt passes through all the clamping brackets, and a plurality of extrusion blocks are fixedly connected to the rubber belt.

[0014] The beneficial effects are as follows: When the present invention is used, the first electric push rod is controlled to contract, so that the two clamping plates release the lowermost annular workpiece, and the stacked annular workpieces slowly slide downward in the clamping brackets, and then the lowermost annular workpiece slowly slides out of the clamping brackets and is placed on the corresponding tray or the ground at the work station, achieving the purpose of discharging the workpieces one by one, without the need for manual secondary handling using a traveling crane, and at the same time achieving the effect of handling gently, avoiding damage to the workpieces caused by bumping against the ground.

[0015] When adjusting the height of the mounting frame and the forklift forks to place the annular workpiece, when the spherical touch sensor contacts the ground or the machine tool, it indicates that the height of the forklift forks is appropriate to place the annular workpiece. Therefore, detecting through the spherical touch sensor can effectively solve the problem of the forklift forks colliding with the ground and the machine tool.

[0016] Control the second electric push rod to contract, so that the arc plate drives the clamping bracket to move towards the center of the fixed disk, compressing the connecting rod. At the same time, the arc plate slides inside the clamping bracket, thereby adjusting the distance between the four clamping brackets and the center of the fixed disk, so as to adapt to annular workpieces of different diameters. Description of the Drawings

[0017] Figure 1 It is the first three-dimensional structure schematic diagram of the intelligent forklift for automatic loading and unloading of the present invention;

[0018] Figure 2 It is the second three-dimensional structure schematic diagram of the intelligent forklift for automatic loading and unloading of the present invention;

[0019] Figure 3 It is the partial three-dimensional structure schematic diagram of the intelligent forklift for automatic loading and unloading of the present invention;

[0020] Figure 4 It is the sectional three-dimensional structure schematic diagram of the clamping bracket of the intelligent forklift for automatic loading and unloading of the present invention;

[0021] Figure 5Schematic diagram of the combined three-dimensional structure of the scraping strip and the arc-shaped airbag of the intelligent forklift for automatic loading and unloading of the present invention;

[0022] Figure 6 For the present invention Figure 4 Enlarged view of area A;

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the extrusion unit of the intelligent forklift for automatic loading and unloading of the present invention;

[0024] Figure 8 Schematic diagram of the combined three-dimensional structure of the clamping assembly and the inner support assembly of the intelligent forklift for automatic loading and unloading of the present invention;

[0025] Figure 9 Schematic diagram of the combined three-dimensional structure of the clamping plate, rubber belt and extrusion block of the intelligent forklift for automatic loading and unloading of the present invention.

[0026] The markings of each component in the drawings are as follows: 1 - forklift body, 2 - mast, 3 - mounting frame, 4 - fork, 001 - protrusion, 002 - scraping strip, 101 - bidirectional lead screw, 102 - first driving motor, 103 - slide bar, 201 - first fixing plate, 202 - first electric push rod, 203 - clamping plate, 301 - fixing frame, 302 - cylinder, 303 - fixing disk, 401 - connecting rod, 402 - clamping frame, 403 - U-shaped frame, 404 - clamping roller, 405 - spur gear, 406 - rack, 407 - second fixing plate, 408 - trapezoidal block, 409 - first elastic member, 410 - second elastic member, 501 - annular frame, 502 - air pump, 503 - branch pipe, 504 - arc-shaped airbag, 601 - rectangular airbag, 602 - three-way pipe, 603 - arc-shaped block, 701 - second driving motor, 702 - baffle, 801 - first fixing rod, 802 - spherical touch sensor, 901 - second electric push rod, 902 - third driving motor, 903 - third fixing plate, 904 - second fixing rod, 905 - arc-shaped plate, 906 - rubber belt, 907 - extrusion block. Detailed implementation mode

[0027] The present invention will be specifically introduced below in conjunction with the drawings and specific embodiments.

[0028] Embodiment 1

[0029] An intelligent forklift for automatic loading and unloading, as Figure 1-8 shown, includes a forklift body 1, a mast 2, a mounting frame 3, forks 4 and an adjustment assembly; the forklift body 1 is connected with the mast 2; the mast 2 is connected with the mounting frame 3; the mounting frame 3 is connected with the adjustment assembly; the adjustment assembly is connected with two forks 4;

[0030] It also includes a fixing frame 301, a cylinder 302, a fixing disk 303, a clamping assembly and an inner support assembly; a fixing frame 301 is welded on the gantry 2; the fixing frame 301 is fixedly connected with a cylinder 302; the telescopic end of the cylinder 302 is fixedly connected with a fixing disk 303; four annularly and equidistantly arranged clamping assemblies are connected to the fixing disk 303; an inner support assembly is connected to the lower side of the fixing disk 303; the inner support assembly is connected to all the clamping assemblies.

[0031] The adjusting assembly includes a bidirectional lead screw 101, a first driving motor 102 and a slide bar 103; the bidirectional lead screw 101 is rotatably connected to the mounting frame 3; the first driving motor 102 is bolted to the mounting frame 3; the output shaft of the first driving motor 102 is fixedly connected with the bidirectional lead screw 101; the bidirectional lead screw 101 is threadedly connected to the two forklift forks 4; the slide bar 103 is fixedly connected to the mounting frame 3; the slide bar 103 is slidably connected to the two forklift forks 4.

[0032] It also includes a first fixing plate 201, a first electric push rod 202 and a clamping plate 203; chutes are opened at the front and rear of the mounting frame 3, and an electric slider is slidably connected in each chute, and a first fixing plate 201 is bolted to each electric slider; two first electric push rods 202 are fixedly connected to the opposite sides of the two first fixing plates 201; the telescopic ends of all the first electric push rods 202 at the front are jointly fixedly connected with a clamping plate 203, and the clamping plate 203 is made of rubber material; the telescopic ends of all the first electric push rods 202 at the rear are jointly fixedly connected with another clamping plate 203.

[0033] The clamping assembly includes a connecting rod 401, a clamping frame 402, a rack 406, a second fixing plate 407, a trapezoidal block 408, an extrusion unit and a first elastic member 409; the outer ring surface of the fixing disk 303 is fixedly connected with a connecting rod 401; the connecting rod 401 is fixedly connected with a clamping frame 402; a rectangular groove is opened on the clamping frame 402, and two first elastic members 409 are fixedly connected to the top of the rectangular groove, and the telescopic ends of all the first elastic members 409 are jointly fixedly connected with a second fixing plate 407, and the lower side of the second fixing plate 407 contacts the clamping frame 402; the second fixing plate 407 is fixedly connected with a rack 406 through a connecting block; a plurality of equidistantly arranged extrusion units are connected in the rectangular groove of the clamping frame 402, and a plurality of equidistantly arranged trapezoidal blocks 408 are fixedly connected to the second fixing plate 407, and each trapezoidal block 408 corresponds to an extrusion unit.

[0034] The extrusion unit includes a U-shaped frame 403, a clamping roller 404, a spur gear 405 and a second elastic member 410; two second elastic members 410 are fixedly connected in the rectangular groove of the clamping frame 402; the telescopic ends of all the second elastic members 410 are jointly fixedly connected with a U-shaped frame 403; the U-shaped frame 403 is rotatably connected with a clamping roller 404; the clamping roller 404 is fixedly connected with a spur gear 405; the spur gear 405 faces the rack 406.

[0035] The inner support assembly includes an annular frame 501, an air pump 502, branch pipes 503, and arc-shaped air bags 504; an annular frame 501 is welded to the lower side of the fixed disk 303; the annular frame 501 is connected to an air pump 502; the outlet of the air pump 502 is communicated with branch pipes 503; an arc-shaped air bag 504 is arranged between every two adjacent clamping frames 402, and each arc-shaped air bag 504 is fixedly connected to the corresponding two clamping frames 402; all the arc-shaped air bags 504 are communicated with the branch pipes 503.

[0036] A scraping strip 002 is arranged on the lower side of each arc-shaped air bag 504, and the scraping strip 002 is used to scrape off the metal chips remaining on the inner wall of the annular workpiece, preventing the metal chips from damaging the arc-shaped air bag 504.

[0037] It further includes a rectangular air bag 601, a tee pipe 602, and an arc-shaped block 603; a rectangular air bag 601 is arranged in the rectangular groove of each clamping frame 402, and a number of equidistant protruding parts 001 are arranged on the rectangular air bag 601; a tee pipe 602 is fixedly connected in each clamping frame 402; each tee pipe 602 is communicated with a corresponding rectangular air bag 601; each tee pipe 602 is communicated with the corresponding two arc-shaped air bags 504; a number of equidistant arc-shaped blocks 603 are fixedly connected to each second fixed plate 407, and each arc-shaped block 603 corresponds to a protruding part 001 of a rectangular air bag 601. By squeezing the protruding part 001 with the arc-shaped block 603, the air in the rectangular air bag 601 is introduced into the arc-shaped air bag 504 through the tee pipe 602.

[0038] After the workpiece is processed, it is usually placed on a pallet and waits for transportation and processing. When it is necessary to transport a ring-shaped workpiece, the forklift is controlled to run so that the center of the fixed disk 303 is aligned with the center of the ring-shaped workpiece. The height of the mounting bracket 3 is adjusted through the lifting system of the forklift itself. At this time, the two clamping plates 203 are located on both sides of the outer ring surface of the ring-shaped workpiece, and the two forklift forks 4 are located on both sides of the pallet, and the upper surface of the forklift forks 4 is lower than the lower surface of the ring-shaped workpiece. Then, the air cylinder 302 is controlled to extend to push the fixed disk 303 and the parts connected thereto to move downward, so that the clamping bracket 402 moves downward to contact the ring-shaped workpiece. The ring-shaped workpiece presses the clamping roller 404, so that the U-shaped bracket 403 presses the second elastic member 410, and the spur gear 405 meshes with the rack 406. As the clamping bracket 402 continues to move downward, the frictional force between the ring-shaped workpiece and the clamping roller 404 has a tendency to drive the clamping roller 404 to rotate. However, since the spur gear 405 and the rack 406 are in a meshed state at this time, and the lower side of the second fixing plate 407 is resisted by the clamping bracket 402, the ring-shaped workpiece cannot drive the clamping roller 404 to rotate at this time. During the process of the air cylinder 302 extending and the arc-shaped airbag 504 moving downward, the residual metal chips on the inner wall of the ring-shaped workpiece are scraped off by the scraping strip 002 to prevent the metal chips from damaging the arc-shaped airbag 504. At the same time, the first electric push rod 202 is controlled to extend to push the clamping plate 203 to move, so that the two clamping plates 203 clamp the ring-shaped workpiece. At the same time, the arc-shaped airbag 504 is in a state of being attached to the inner ring surface of the ring-shaped workpiece. Then, the air pump 502 is controlled to start, and air is conveyed to the arc-shaped airbag 504 through the branch pipe 503, so that the arc-shaped airbag 504 expands to squeeze the inner ring surface of the ring-shaped workpiece, thereby playing a role of supporting and fixing, preventing the ring-shaped workpiece from accidentally sliding out of the clamping bracket 402 during transportation and discharging. Then, the lifting system of the forklift itself is controlled to drive the mounting bracket 3 to rise, and at the same time, the air cylinder 302 is controlled to contract synchronously, and then the ring-shaped workpiece is clamped and lifted. Then, the first drive motor 102 is controlled to start, so that the bidirectional lead screw 101 rotates, and the two forklift forks 4 slide on the slide rod 103 and approach each other, and then the forklift forks 4 move below the ring-shaped workpiece to support the lower side of the ring-shaped workpiece, preventing the ring-shaped workpiece from accidentally falling out of the clamping bracket 402 due to the bumps generated during the transportation of the ring-shaped workpiece by the forklift. It should be noted that the number of ring-shaped workpieces on the pallet is not limited here. That is to say, through this operation, a single ring-shaped workpiece can be clamped, or multiple stacked ring-shaped workpieces can be clamped. Since some ring-shaped workpieces will be coated with rust-preventive oil after being processed on a lathe to prevent the surface of the ring-shaped workpiece from rusting, and the surface friction of the ring-shaped workpiece will be smaller after being coated with rust-preventive oil, making it more difficult to clamp, and there may be a tendency to slide downward in the clamping bracket 402. When the ring-shaped workpiece slides downward in the clamping bracket 402, the ring-shaped workpiece will drive the clamping roller 404 to rotate, so that the spur gear 405 drives the rack 406 and the second fixing plate 407 to move upward, compressing the first elastic member 409, and the trapezoidal block 408 presses the U-shaped bracket 403, and then the pressure of the clamping roller 404 pressing the ring-shaped workpiece increases.At the same time, the rack 406 drives the arc block 603 to move, so that the arc block 603 squeezes the protrusion 001, and the air in the rectangular airbag 601 is introduced into the arc airbag 504 through the three-way pipe 602, thereby enhancing the supporting effect of the arc airbag 504 on the annular workpiece, thereby enhancing the clamping force of the annular workpiece through the sliding action of the annular workpiece itself, and cooperating with the clamping plate 203 and the arc airbag 504 to clamp and support the annular workpiece, preventing the annular workpiece from slipping out of the clamping frame 402, and clamping the annular workpiece by moving the clamping frame 402 from top to bottom, avoiding the use of the fork 4 to insert and remove the annular workpiece from the side, and preventing the fork 4 from touching and pushing the annular workpiece, causing the annular workpiece to fall, bump and be damaged. When the stacked annular workpieces need to be placed at different workstations, the forklift's built-in lifting system is used to pump the branch pipe 503 through the air pump 502. The air adjusts the expansion degree of the arc-shaped airbag 504, controls the first electric push rod 202 to contract, and makes the two clamping plates 203 release the lowest annular workpiece, so that the stacked annular workpieces slowly slide downward in the clamping frame 402, and then makes the lowest annular workpiece slowly slide out of the clamping frame 402 and placed on the corresponding pallet or ground of the workstation, so as to achieve the purpose of releasing the workpieces one by one, without the need for manual secondary handling using a crane, and at the same time achieve the effect of handling with care, avoiding damage caused by collision between the workpiece and the ground. When it is necessary to use the fork 4 to fork and transport other types of workpieces separately or directly fork the pallet, control the cylinder 302 to contract, so that the fixed plate 303 and the parts connected thereto rise, and control the electric slider on the mounting frame 3 to drive the first fixed plate 201 and the parts connected thereto to rise, so as to avoid the fixed plate 303 and the parts connected thereto blocking the fork 4 for forking.

[0039] Example 2

[0040] On the basis of Example 1, Figure 1-4 As shown,

[0041] It also includes a second drive motor 701 and a baffle 702; each clamping frame 402 is bolted to a second drive motor 701 on the lower side; each clamping frame 402 has a through groove at the lower part; each second drive motor 701 output shaft is fixedly connected to a baffle 702, and the baffle 702 is located in the through groove at the lower part of the clamping frame 402.

[0042] It also includes a first fixing rod 801 and a spherical touch sensor 802; each clamping frame 402 is fixedly connected to a first fixing rod 801 on the lower side; each first fixing rod 801 is fixedly connected to a spherical touch sensor 802; the height of the lower side of the spherical touch sensor 802 is lower than the height of the lower side of the fork 4.

[0043] The adjusting assembly is usually only used to precisely adjust the distance between the two forklift tines 4 before picking up goods, and the adjustment speed is not fast. After the annular workpiece is clamped and lifted, the process of supporting the annular workpiece by adjusting the positions of the two forklift tines 4 is relatively slow. During this process, there is a risk that the annular workpiece may accidentally fall out of the clamping frame 402. Before clamping the annular workpiece, control the second drive motor 701 to start. The output shaft of the second drive motor 701 drives the baffle 702 to rotate, so that the baffle 702 rotates out of the through groove of the clamping frame 402 to prevent the baffle 702 from blocking the annular workpiece. When the annular workpiece is clamped and lifted, control the second drive motor 701 to reverse, so that the baffle 702 quickly resets to support the lower side of the annular workpiece and prevent the annular workpiece from sliding out and falling from the clamping frame 402.

[0044] When it is necessary to place the annular workpiece on the ground or the machine tool, adjust the heights of the mounting frame 3 and the forklift tines 4 to place the annular workpiece. When the spherical touch sensor 802 contacts the ground or the machine tool, it means that the height of the forklift tines 4 is appropriate to place the annular workpiece. Furthermore, detecting through the spherical touch sensor 802 can effectively solve the problem of the forklift tines 4 colliding with the ground and the machine tool.

[0045] Embodiment 3

[0046] Based on Embodiment 2, as Figure 1-9 shown,

[0047] It further includes a second electric push rod 901, a third drive motor 902, a third fixing plate 903, a second fixing rod 904, an arc plate 905, a rubber belt 906, and an extrusion block 907. A second electric push rod 901 is fixedly connected to each of the left and right parts of the fixed disk 303. A third fixing plate 903 is fixedly connected to the telescopic end of each of the two second electric push rods 901. A third drive motor 902 is bolted to each third fixing plate 903. A second fixing rod 904 is fixedly connected to the output shaft of each third drive motor 902. An arc plate 905 is slidably connected to the inside of the two clamping frames 402 on the left. Another arc plate 905 is slidably connected to the inside of the two clamping frames 402 on the right. Each of the two arc plates 905 is rotatably connected to a second fixing rod 904, and the connecting rod 401 is set as an elastic telescopic rod. A rubber belt 906 is wound around the inside of the two clamping plates 203, and the rubber belt 906 passes through all the clamping frames 402. Four extrusion blocks 907 are fixedly connected to the rubber belt 906.

[0048] When it is necessary to clamp annular workpieces with different diameters, control the second electric push rod 901 to contract, so that the arc-shaped plate 905 drives the clamping frame 402 to move towards the center of the fixed disk 303, causing the connecting rod 401 to be compressed. At the same time, the arc-shaped plate 905 slides within the clamping frame 402, thereby adjusting the distance between the four clamping frames 402 and the center of the fixed disk 303, so as to adapt to annular workpieces with different diameters. While adjusting the clamping frame 402, the arc-shaped airbag 504 deforms as the clamping frame 402 moves, synchronously adapting to annular workpieces with different diameters. For annular workpieces with a smaller diameter, the outer surface of the arc-shaped airbag 504 no longer fully adheres to the inner ring surface of the annular workpiece, but the protruding part 001 of the arc-shaped airbag 504 adheres to the inner ring surface of the annular workpiece for support. Although the support effect decreases, compared with annular workpieces with a larger diameter, the weight of annular workpieces with a smaller diameter also decreases significantly, and the required clamping force is relatively reduced. After the clamping plate 203 and the clamping frame 402 complete the clamping of the annular workpiece, control the third driving motor 902 to start. The output shaft of the third driving motor 902 drives the second fixed rod 904 to rotate to wind up the rubber belt 906, making the diameter of the rubber belt 906 smaller, so that the extrusion block 907 on the rubber belt 906 contacts and squeezes the outer ring surface of the annular workpiece, thereby further increasing the clamping of the annular workpiece. While the rubber belt 906 is being wound up, the clamping plate 203 deforms, increasing the contact area between the clamping plate 203 and the annular workpiece, increasing the friction between the annular workpiece and the clamping plate 203, and enhancing the clamping effect of the clamping plate 203 on the annular workpiece, further preventing the annular workpiece from accidentally slipping out and falling from the clamping frame 402.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes may be made therein without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent forklift for automatic loading and unloading, comprising a forklift body (1), a mast (2), a mounting frame (3), forks (4) and an adjustment assembly; the forklift body (1) is connected with a mast (2); the mast (2) is connected with a mounting frame (3); the mounting frame (3) is connected with an adjustment assembly; the adjustment assembly is connected with two forks (4), and the interval between the two forks (4) is adjusted by the adjustment assembly; characterized in that: It further includes a fixing frame (301), a cylinder (302), a fixing disk (303), a clamping assembly and an inner support assembly; the fixing frame (301) is fixedly connected to the gantry (2); the fixing frame (301) is fixedly connected to the cylinder (302); the telescopic end of the cylinder (302) is fixedly connected to the fixing disk (303); four annularly equidistant clamping assemblies are connected to the fixing disk (303), and the clamping assemblies are used for clamping annular workpieces; an inner support assembly is connected to the lower side of the fixing disk (303), and the inner support assembly is used for limiting the annular workpiece; the inner support assembly is connected to all the clamping assemblies.

2. The intelligent forklift for automatic loading and unloading according to claim 1, characterized in that: It further includes a first fixing plate (201), a first electric push rod (202) and a clamping plate (203); chutes are provided at both the front and rear of the mounting frame (3), and an electric slider is slidably connected in each chute, and a first fixing plate (201) is fixedly connected to each electric slider; a plurality of first electric push rods (202) are fixedly connected to the opposite sides of the two first fixing plates (201); the telescopic ends of all the first electric push rods (202) at the front jointly fixedly connect a clamping plate (203), and the clamping plate (203) is made of rubber material; the telescopic ends of all the first electric push rods (202) at the rear jointly fixedly connect another clamping plate (203).

3. The intelligent forklift with automatic loading and unloading according to claim 1, characterized in that: The clamping assembly includes a connecting rod (401), a clamping frame (402), a rack (406), a second fixing plate (407), a trapezoidal block (408), an extrusion unit and a first elastic member (409); the connecting rod (401) is fixedly connected to the fixing disk (303); the connecting rod (401) is fixedly connected to the clamping frame (402); a rectangular groove is provided on the clamping frame (402), and a plurality of first elastic members (409) are fixedly connected to the top of the rectangular groove, and the telescopic ends of all the first elastic members (409) jointly fixedly connect a second fixing plate (407), and the lower side of the second fixing plate (407) contacts the clamping frame (402); the second fixing plate (407) is fixedly connected to the rack (406) through a connecting block; a plurality of equidistant extrusion units are connected in the rectangular groove of the clamping frame (402), a plurality of equidistant trapezoidal blocks (408) are fixedly connected to the second fixing plate (407), and each trapezoidal block (408) corresponds to an extrusion unit.

4. The intelligent forklift for automatic loading and unloading according to claim 3, characterized in that: The extrusion unit includes a U-shaped frame (403), a clamping roller (404), a spur gear (405) and a second elastic member (410); a plurality of second elastic members (410) are fixedly connected in the rectangular groove of the clamping frame (402); the telescopic ends of all the second elastic members (410) jointly fixedly connect a U-shaped frame (403); a clamping roller (404) is rotatably connected to the U-shaped frame (403); the clamping roller (404) is fixedly connected to the spur gear (405); the spur gear (405) faces the rack (406).

5. An intelligent forklift for automatic loading and unloading according to claim 1, characterized in that: The inner support assembly includes an annular frame (501), an air pump (502), branch pipes (503), and arc-shaped air bags (504); the annular frame (501) is fixedly connected to the lower side of the fixed disk (303); the annular frame (501) is connected to the air pump (502); the outlet of the air pump (502) is communicated with the branch pipes (503); an arc-shaped air bag (504) is arranged between every two adjacent clamping frames (402), and each arc-shaped air bag (504) is fixedly connected to the corresponding two clamping frames (402); all the arc-shaped air bags (504) are communicated with the branch pipes (503).

6. An intelligent forklift for automatic loading and unloading according to claim 5, characterized in that: A scraping strip (002) is arranged on the lower side of each arc-shaped air bag (504).

7. An intelligent forklift for automatic loading and unloading according to any one of claims 3-5, characterized in that: It further includes a rectangular air bag (601), a three-way pipe (602), and arc-shaped blocks (603); a rectangular air bag (601) is arranged in the rectangular groove of each clamping frame (402), and a number of equidistant protruding parts (001) are arranged on the rectangular air bag (601); a three-way pipe (602) is fixedly connected in each clamping frame (402); each three-way pipe (602) is communicated with a rectangular air bag (601); each three-way pipe (602) is communicated with the corresponding two arc-shaped air bags (504); a number of equidistant arc-shaped blocks (603) are fixedly connected to each second fixing plate (407), and each arc-shaped block (603) corresponds to a protruding part (001) of a rectangular air bag (601).

8. The intelligent forklift with automatic loading and unloading according to claim 3, characterized in that: It further includes a second driving motor (701) and a baffle (702); a second driving motor (701) is fixedly connected to the lower side of each clamping frame (402); a through groove is formed in the lower part of each clamping frame (402); a baffle (702) is fixedly connected to the output shaft of each second driving motor (701), and the baffle (702) is located in the through groove in the lower part of the clamping frame (402).

9. The intelligent forklift with automatic loading and unloading according to claim 3, characterized in that: It further includes a first fixing rod (801) and a spherical touch sensor (802); a first fixing rod (801) is fixedly connected to the lower side of each clamping frame (402); a spherical touch sensor (802) is fixedly connected to each first fixing rod (801); the height of the lower side of the spherical touch sensor (802) is lower than the height of the lower side of the forklift fork (4).

10. The intelligent forklift for automatic loading and unloading according to claim 3, characterized in that: It further includes a second electric push rod (901), a third driving motor (902), a third fixing plate (903), a second fixing rod (904), an arc-shaped plate (905), a rubber belt (906), and an extrusion block (907); a second electric push rod (901) is fixedly connected to each of the left and right parts of the fixed disk (303); a third fixing plate (903) is fixedly connected to the telescopic end of each of the two second electric push rods (901); a third driving motor (902) is fixedly connected to each of the third fixing plates (903); a second fixing rod (904) is fixedly connected to the output shaft of each of the third driving motors (902); an arc-shaped plate (905) is slidably connected in common within the two clamping brackets (402) on the left; another arc-shaped plate (905) is slidably connected in common within the two clamping brackets (402) on the right; each of the two arc-shaped plates (905) is rotatably connected to a second fixing rod (904), and the connecting rod (401) is arranged as an elastic telescopic rod; a rubber belt (906) is wound around the two clamping plates (203) in common, the rubber belt (906) passes through all the clamping brackets (402), and a number of extrusion blocks (907) are fixedly connected to the rubber belt (906).

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